subgrade

noun

sub·​grade ˈsəb-ˌgrād How to pronounce subgrade (audio)
: a surface of earth or rock leveled off to receive a foundation (as of a road)

Examples of subgrade in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Per the budget document, more than $47 million will go to infrastructure, including $18 million for plaza level waterproofing, $6 million for garage repairs and subgrade waterproofing and $14 million for the terrace level overhang and roof. Ted Johnson, Deadline, 25 Mar. 2026 Beckett labels within slabs will also undergo visual changes — subgrades will remain on the label — and add online imaging to orders. Larry Holder, New York Times, 14 Jan. 2026 Engineers call the existing ground where the pavement goes the subgrade. Mansour Solaimanian, The Conversation, 10 May 2024 The project consists of removing and replacing all the pavement and subgrade on West between Emerald and Rickert drives. Michelle Mullins, Chicago Tribune, 2 Aug. 2023 Work includes removing the existing pavement, remediating unsuitable subgrade, installing an aggregate base and 8-inch of non-reinforced concrete pavement, installing under drains, installing a new catch basin and performing a storm sewer tap. cleveland, 7 Aug. 2022 The project also includes the removal and installation of drainage structures, sidewalks, curbs and gutters, utilities, canal excavation, base, subgrade and new pavement, Keller said. Austen Erblat, sun-sentinel.com, 1 Dec. 2021

Word History

First Known Use

1893, in the meaning defined above

Time Traveler
The first known use of subgrade was in 1893

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Cite this Entry

“Subgrade.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/subgrade. Accessed 5 Jul. 2026.

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